Here's how we do it on our 2005 Pilot:
With the ignition turned off, press down and hold the Trip Meter Reset
Turn the ignition to the ON position (not so far that the starter motor
engages), and continue holding down the Trip Meter Reset Button.
The Engine Maintenance Light (or whatever it is called) will eventually
start flashing, then you'll hear a beep, then the light will go out.
I'm doing this from memory, so may not have the exact terms right. By
the way, it's not in the manual. I found this myself by searching
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